What do you have to do to see/apply the update?
In Settings -> About phone -> Firmware Update, mine shows the current version as "Gemini-7.1-Planet-10052018-V2.<2018-05-10 15:09>" (in a landscape-oriented screen). When I tap 'Detection of update', it flashes "A new version is being detected" but then shows "Is the latest version".
(Mine's a second-batch, X27, 4G model.)
(I'm hoping for headset buttons to work with the lid closed…)